Synonyms: (4aS)-4aα,5,5aα,6,6aα,6b-Hexahydro-3-(hydroxymethyl)-5-methylene-6bβ-methylcyclopropa[2,3]indeno[5,6-b]furan-2(4H)-one;4aα,5,5aα,6,6aα,6b-Hexahydro-3-(hydroxymethyl)-6bβ-methyl-5-methylenecycloprop[2,3]indeno[5,6-b]furan-2(4H)-one;Onoseriolide